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fclose, _fcloseall (Windows CE 5.0)

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Developing an Application > Microsoft C Run-time Library for Windows CE > Run-time Library Reference

Closes a stream (fclose) or closes all open streams (_fcloseall).

int _fcloseall(    void );int fclose(    FILE* stream);

Parameters

  • stream
    Pointer to FILE structure.

Return Values

fclose returns 0 if the stream is successfully closed.

_fcloseall returns the total number of streams closed.

Both functions return EOF to indicate an error.

Remarks

The fclose function closes stream.

_fcloseall closes all open streams except stdin, stdout, stderr (and, in MS-DOS®, _stdaux and _stdprn). It also closes and deletes any temporary files created by tmpfile.

In both functions, all buffers associated with the stream are flushed prior to closing.

System-allocated buffers are released when the stream is closed.

Buffers assigned by the user with setvbuf are not automatically released.

Example

/* FOPEN.C: This program opens files named "data"
 * and "data2".It  uses fclose to close "data" and
 * _fcloseall to close all remaining files.
 */

#include <stdio.h>

FILE *stream, *stream2;

void main( void )
{
   int numclosed;

   /* Open for read (will fail if file "data" does not exist) */
   if( (stream  = fopen( "data", "r" )) == NULL )
      printf( "The file 'data' was not opened\n" );
   else
      printf( "The file 'data' was opened\n" );

   /* Open for write */
   if( (stream2 = fopen( "data2", "w+" )) == NULL )
      printf( "The file 'data2' was not opened\n" );
   else
      printf( "The file 'data2' was opened\n" );

   /* Close stream */
   if( fclose( stream ) )
      printf( "The file 'data' was not closed\n" );

   /* All other files are closed: */
   numclosed = _fcloseall( );
   printf( "Number of files closed by _fcloseall: %u\n", numclosed );
}

Output

The file 'data' was opened
The file 'data2' was opened
Number of files closed by _fcloseall: 1

Requirements

OS Versions: Windows CE 2.0 and later.
Header: stdlib.h.
Link Library: coredll.dll.

See Also

fflush | fopen | setvbuf

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